Without delay, let's solve this. We've got 344 and we will be multiplying it by 25, that is, adding 344 to itself 25 times.
Step 1: 0 + 344 = 344
Step 2: 344 + 344 = 688
Step 3: 688 + 344 = 1032
Step 4: 1032 + 344 = 1376
Step 5: 1376 + 344 = 1720
Step 6: 1720 + 344 = 2064
Step 7: 2064 + 344 = 2408
Step 8: 2408 + 344 = 2752
Step 9: 2752 + 344 = 3096
Step 10: 3096 + 344 = 3440
Step 11: 3440 + 344 = 3784
Step 12: 3784 + 344 = 4128
Step 13: 4128 + 344 = 4472
Step 14: 4472 + 344 = 4816
Step 15: 4816 + 344 = 5160
Step 16: 5160 + 344 = 5504
Step 17: 5504 + 344 = 5848
Step 18: 5848 + 344 = 6192
Step 19: 6192 + 344 = 6536
Step 20: 6536 + 344 = 6880
Step 21: 6880 + 344 = 7224
Step 22: 7224 + 344 = 7568
Step 23: 7568 + 344 = 7912
Step 24: 7912 + 344 = 8256
Step 25: 8256 + 344 = 8600

So, 344*25 = 8600